1963 Chev Z11 NASCAR effort? - Page 2

ss wannabee · 12-29-2011, 11:10 AM

Recently seen on one of the 409 sites....a 1x4 intake manifold for a Z11? Reportedly only 4 of these were cast...and somebody HAS them ALL? Seems to make some sense...NASCAR rules dictated single-carb engines ONLY...Piece in the photo looks like Z11.....

Thought that the Z11 program was drag-racing ONLY with the familiar 2x4 induction? Did Chevrolet test the engine for "roundy-round" usage (with 1-4bbl) only to move on to the fabled "Mystery Engine" ? Perhaps the Z11 results were lack-luster on the long track?

Also, would NASCAR allow the lightweight body parts? I think they might've be "trouble" anyway at lap speeds of 170-180 mph...which was competitve for that time...

Maybe that 1x4 intake was made for a certain drag class? Anyone out there got info?

12-29-2011, 11:10 AM	#1
ss wannabee Senior Member Join Date: Jun 2005 Posts: 663 Likes: 0 Liked 7 Times in 7 Posts	1963 Chev Z11 NASCAR effort? Recently seen on one of the 409 sites....a 1x4 intake manifold for a Z11? Reportedly only 4 of these were cast...and somebody HAS them ALL? Seems to make some sense...NASCAR rules dictated single-carb engines ONLY...Piece in the photo looks like Z11..... Thought that the Z11 program was drag-racing ONLY with the familiar 2x4 induction? Did Chevrolet test the engine for "roundy-round" usage (with 1-4bbl) only to move on to the fabled "Mystery Engine" ? Perhaps the Z11 results were lack-luster on the long track? Also, would NASCAR allow the lightweight body parts? I think they might've be "trouble" anyway at lap speeds of 170-180 mph...which was competitve for that time... Maybe that 1x4 intake was made for a certain drag class? Anyone out there got info?